#!/usr/bin/env python
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import time
import unittest

import command
import config
import node

LEADER = 1
DUT_ROUTER1 = 2
MED1 = 3

class Cert_5_3_11_AddressQueryTimeoutIntervals(unittest.TestCase):
    def setUp(self):
        self.simulator = config.create_default_simulator()

        self.nodes = {}
        for i in range(1, 4):
            self.nodes[i] = node.Node(i, (i == MED1), simulator = self.simulator)

        self.nodes[LEADER].set_panid(0xface)
        self.nodes[LEADER].set_mode('rsdn')
        self.nodes[LEADER].add_whitelist(self.nodes[DUT_ROUTER1].get_addr64())
        self.nodes[LEADER].enable_whitelist()

        self.nodes[DUT_ROUTER1].set_panid(0xface)
        self.nodes[DUT_ROUTER1].set_mode('rsdn')
        self.nodes[DUT_ROUTER1].add_whitelist(self.nodes[LEADER].get_addr64())
        self.nodes[DUT_ROUTER1].add_whitelist(self.nodes[MED1].get_addr64())
        self.nodes[DUT_ROUTER1].enable_whitelist()
        self.nodes[DUT_ROUTER1].set_router_selection_jitter(1)

        self.nodes[MED1].set_panid(0xface)
        self.nodes[MED1].set_mode('rsn')
        self.nodes[MED1].add_whitelist(self.nodes[DUT_ROUTER1].get_addr64())
        self.nodes[MED1].enable_whitelist()

    def tearDown(self):
        for node in list(self.nodes.values()):
            node.stop()
            node.destroy()
        self.simulator.stop()

    def test(self):
        # 1 ALL: Build and verify the topology
        self.nodes[LEADER].start()
        self.simulator.go(5)
        self.assertEqual(self.nodes[LEADER].get_state(), 'leader')

        self.nodes[DUT_ROUTER1].start()
        self.simulator.go(5)
        self.assertEqual(self.nodes[DUT_ROUTER1].get_state(), 'router')

        self.nodes[MED1].start()
        self.simulator.go(5)
        self.assertEqual(self.nodes[MED1].get_state(), 'child')

        # 2 MED1: MED1 sends an ICMPv6 Echo Request to a non-existent mesh-local address X
        X = "fdde:ad00:beef:0000:aa55:aa55:aa55:aa55"
        self.assertFalse(self.nodes[MED1].ping(X))

        self.simulator.go(config.AQ_TIMEOUT)

        # Verify DUT_ROUTER1 sent an Address Query Request message
        dut_router1_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)
        msg = dut_router1_messages.next_coap_message('0.02', '/a/aq')
        command.check_address_query(msg, self.nodes[DUT_ROUTER1], config.REALM_LOCAL_ALL_ROUTERS_ADDRESS)

        # Verify DUT_ROUTER1 didn't receive an Address Query Notification message
        dut_router1_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)
        msg = dut_router1_messages.next_coap_message('0.02', '/a/an', False)
        self.assertTrue(msg is None)

        # 2 MED1: MED1 sends an ICMPv6 Echo Request to a non-existent mesh-local address X before
        #         ADDRESS_QUERY_INITIAL_RETRY_DELAY timeout expires
        self.assertFalse(self.nodes[MED1].ping(X))

        self.simulator.go(config.ADDRESS_QUERY_INITIAL_RETRY_DELAY)

        # Verify DUT_ROUTER1 didn't generate an Address Query Request message
        dut_router1_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)
        msg = dut_router1_messages.next_coap_message('0.02', '/a/aq', False)
        self.assertTrue(msg is None)

        # 3 MED1: MED1 sends an ICMPv6 Echo Request to a non-existent mesh-local address X after
        #         ADDRESS_QUERY_INITIAL_RETRY_DELAY timeout expired
        self.assertFalse(self.nodes[MED1].ping(X))

        # Verify DUT_ROUTER1 sent an Address Query Request message
        dut_router1_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1)
        msg = dut_router1_messages.next_coap_message('0.02', '/a/aq')
        command.check_address_query(msg, self.nodes[DUT_ROUTER1], config.REALM_LOCAL_ALL_ROUTERS_ADDRESS)

if __name__ == '__main__':
    unittest.main()